Teledyne 311-D instruction manual Leak Testing, Specification Data

1.Disconnect cell.

2.Move range switch to “CAL” position.

3.Adjust P1 such that the output of A3, pin 6, measures between 0 and +0.5 mV, ideally +-.3 mV.

4.Adjust P2 for 0 ± 1 mV at output of A2, pin 6.

5.Verify that the offset is the same on all ranges.

6.Re-connect cell.

6.LEAK TESTING

If a leak is suspected in the unit, DO NOT ATTEMPT TO TIGHTEN THE

DISCONNECT FITTINGS. THE FITTINGS ARE POTTED IN EPOXY AND TIGHTENING THEM WILL BREAK THE SEAL! To check for leaks, TAI recommends one of the following procedures:

Procedure 1:

1.Purge the instrument down as low as possible.

2.Place the vent line in water and disconnect the sample.

3.Next, disconnect the vent line and place the range switch on the X100 range.

4.The unit should stay on the X100 range if there are no leaks.

Procedure 2:

1.Purge the instrument with Nitrogen at the sample port.

2.Note the reading once it has stabilized (at least 24 hours on the 0-10 ppm range) and increase the flow rate.

3.If the reading goes down, the unit, or the tubing to the unit, has a leak.

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SPECIFICATION DATA

TAI SALES ORDER NUMBER

INSTRUMENT MODEL NUMBER 311D

INSTRUMENT SERIAL NUMBER

MICRO-FUEL CELL CLASS B-2C

ACCURACY: ±0.2% OF SCALE, OR ±1 PPM, WHICHEVER IS GREATER, AT

ACONSTANT TEMPERATURE; ±5% OF READING, OR ±1 PPM, WHICHEVER IS GREATER, OVER THE OPERATING TEMPERATURE RANGE.